Inventory - Narrative (Details) - CAD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Disclosure of attribution of expenses by nature to their function [line items] | ||
| Inventory expensed to cost of goods sold | $ 273.0 | $ 233.3 |
| Non-cash expense related to changes in fair value of inventory sold | 132.0 | 72.5 |
| Inventory write-down | 65.5 | 73.4 |
| Cost of sales | ||
| Disclosure of attribution of expenses by nature to their function [line items] | ||
| Inventory write-down | 15.6 | 28.5 |
| Changes in fair value of inventory sold | ||
| Disclosure of attribution of expenses by nature to their function [line items] | ||
| Inventory write-down | $ 49.8 | $ 44.9 |